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Finding the Fourth Proportional to 239,858.71, 330,996.30 and 130,961.04

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Solution

The fourth proportional to 239,858.71, 330,996.30 and 130,961.04 is: 180,721.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,858.71 : 330,996.30 = 130,961.04 : x
  2. Step 2: Convert to fraction form
    239,858.71/330,996.30 = 130,961.04/x
  3. Step 3: Cross multiply
    239,858.71x = 330,996.30 × 130,961.04
  4. Step 4: Simplify right side
    239,858.71x = 43,347,619,356.75
  5. Step 5: Solve for x
    x = 43,347,619,356.75/239,858.71
  6. Step 6: Final answer
    x = 180,721.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.